Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Fixed Exchange Ratio

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Gain Loss On Insurance Proceeds Received For Property Damage, Net

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Insurance Deductible Expense

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Material breach cure period

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Maximum amount of line of credit facility outstanding, net of cash balances

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Ownership Percentage Transferred

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The percentage ownership of equity in the investee.

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Payments For Investments In Equity Securities

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Proceeds from Insurance Settlement

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

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- Definition

Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value.

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Fair value of the amount outstanding under the credit facility.

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Maximum amount borrowed under the credit facility at any time during the period.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

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Recent Transactions and Events (Details)			1 Months Ended			3 Months Ended				6 Months Ended
Recent Transactions and Events (Details)	May 06, 2020 USD ($)	Jan. 02, 2019 USD ($)	Apr. 29, 2020	Sep. 30, 2019 USD ($)	May 31, 2019 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Mar. 30, 2020 USD ($)	Oct. 30, 2019
Business Acquisition
Net gain from insurance proceeds						$ 6,000,000		$ 0		$ 6,000,000	$ 0
Payments for investments in equity securities										1,000,000	48,000,000
Asset impairments						17,000,000		$ 0		26,000,000	0
Payments for business acquired										2,000,000	$ 10,000,000
Delphi Technologies PLC
Business Acquisition
Delphi Technologies' draw on credit facility												$ 500,000,000
Material breach cure period (in days)			30 days
Maximum amount of line of credit facility outstanding, net of cash balances	$ 115,000,000
Line of credit facility, maximum amount outstanding	$ 225,000,000
Delphi Technologies revised exchange ratio	0.4307
The Combined Company With Delphi Technologies
Business Acquisition
Ownership percentage of combined company (in percent)	85.00%
Romeo Systems, Inc.
Business Acquisition
Payments for investments in equity securities					$ 50,000,000
Rinehart Motion Systems LLC and AM Racing LLC
Business Acquisition
Business combination, consideration transferred		$ 15,000,000
Payments for business acquired							$ 2,000,000		$ 10,000,000
Business combination, contingent consideration, liability						3,000,000				3,000,000
Romeo Systems, Inc.
Business Acquisition
Ownership percentage in investee (in percent)					20.00%
Asset impairments							9,000,000
Fair value of equity investment							$ 41,000,000
BorgWarner Romeo Power LLC
Business Acquisition
Ownership percentage in investee (in percent)				60.00%
Payments to acquire interest in joint venture				$ 10,000,000
Delphi Technologies PLC \| The Combined Company With Delphi Technologies
Business Acquisition
Noncontrolling interest, ownership percentage (in percent)	15.00%
BorgWarner Morse TEC LLC
Business Acquisition
Ownership percentage transferred (in percent)													100.00%
Seneca South Carolina Facility
Business Acquisition
Cash advances from insurance carriers										$ 85,000,000
Net gain from insurance proceeds						6,000,000
Insurance deductible expense						$ 1,000,000